How light pollution is a real health issue and five things you can do to ...
(WorldNews Health)

Our world is a brighter place – and not in a good way. According to Dr Jason Pun Chun-shing from the University of Hong Kong’s Department of Physics, whose work involves gauging the level of light pollution, Hong Kong ranks among the worst on the planet. A 2013 study by the university’s scientists found the city’s urban night sky to be as much as 1,000 times brighter than international norms. A study of global satellite images suggests the entire nighttime face of the......